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能源地球科学(英文) 2023年第2期4卷 28-34页

作者： Zheyuan Fan Yudong Fan yinghong su Sinopec Petroleum Exploration and Production Research Institute Beijing102206China Oil and Gas Resources survey China Geological SurveyBeijing100083China

Tong's B-type water drive method was proposed as early as the 1970s and has been widely applied in the dynamic prediction and effective evaluation of oilfield development.Through extensive applications and studies,many researchers found that the statistical constants in the formula of the Tong's B-type water drive method(also referred to as the Tong's B-type formula)are not applicable to multiple types of reservoirs,especially low-permeability ones,due to the limited range of reservoir types when the formula was conceived.Moreover,they put forward suggestions to improve the Tong's B-type formula,most of which focused on the research and calculation of the first constant in the formula.For oilfields in the development stages of high or ultra-high water cuts,it is widely accepted that different types of reservoirs have different limit water cuts.This understanding naturally makes it necessary to further modify the Tong's B-type formula.It is practically significant to establish the water drive formula and cross plot considering that the two constants in the formula vary with reservoir type.By analyzing the derivation process and conditions of the Tong's B-type formula,this study points out two key problems,i.e.,the two constants 7.5 and 1.69 in the formula are not applicable to all types of reservoir.Given this,this study establishes a function between key reservoir parameters and the first constant and another function between key reservoir parameters and recovery efficiency.Based on the established two functions and considering that different types of oil reservoir have different limit water cuts,this study develops an improved Tong's B-type formula and prepares the corresponding improved cross plot.The results of this study will improve the applicability and accuracy of Tong's B-type water drive method in predicting the trend of water cut increasing for different types of oil reservoirs.

关键词： Oilfield development Water drive curve Tong's B-Type water drive method Water cut increase trend Evaluation of development effect

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云南省大学生加工食品消费与焦虑症状关联的纵向研究

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中国学校卫生 2024年第2期45卷 178-182页

作者：姜英虹苏云鹏苏莹珍陶剑陈伟伟胡东月杨俊宇徐洪吕昆明学院医学院云南650214 昆明学院社区护理研究团队大理大学护理学院

目的探讨云南省大学生加工食品消费与焦虑症状的关联,为预防和缓解大学生焦虑症状提供参考。方法采用整群随机抽样方法选取云南2所大学2515名大一年级学生为研究对象进行纵向调查研究,包括基线调查(2021年11月,T1)及3次随访(2022年6月,T... 详细信息

目的探讨云南省大学生加工食品消费与焦虑症状的关联,为预防和缓解大学生焦虑症状提供参考。方法采用整群随机抽样方法选取云南2所大学2515名大一年级学生为研究对象进行纵向调查研究,包括基线调查(2021年11月,T1)及3次随访(2022年6月,T2;2022年11月,T3;2023年6月,T4)。使用食物频率调查表评估大学生加工食品消费状况,采用中文版抑郁-焦虑-压力量表-21(DASS-21)评估大学生的情绪症状。应用广义估计方程模型分析加工食品消费状况与焦虑症状的关联。结果云南大学生T1~T4的4次焦虑症状检出率分别为29.70%,36.70%,37.69%和38.73%,4次焦虑症状评分分别为4(0,8),4(0,10),4(0,12)和2(0,14)。在广义估计方程模型控制人口学变量和混杂因素后,碳酸饮料消费(β=0.06,95%CI=0.03~0.08)、其他加工零食消费(β=0.04,95%CI=0.01~0.07)与焦虑症状的关联均有统计学意义(P值均0.05)。结论云南大学生加工食品消费可能增加焦虑症状风险,且女生更为明显。应加强对大学生加工食品消费的正向指导,以预防或缓解焦虑症状。

关键词：食品处理和加工焦虑精神卫生回归分析学生

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Improving aircraft aerodynamic performance with bionic wing obtained by ice shape modulation

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Chinese Journal of Aeronautics 2023年第2期36卷 76-86页

作者： Like XIE Hua LIANG Haohua ZONG Yun WU yinghong LI Zhi su Xuecheng LIU Science and Technology on Plasma Dynamics Laboratory Air Force Engineering UniversityXi'an 710038China School of Mechanical Engineering Xi'an Jiaotong UniversityXi'an 710049China

For Unmanned Aerial Vehicles(UAVs)with limited electrical power to achieve effectively anti-/de-icing at the leading edge of the wing,a strategy of ice shape modulation was proposed.Isolated simulated ice shape pieces printed by 3D printing technology are mounted on a NACA0012 finite wing model,and its lift/drag coefficients and suction-side velocity fields are measured by the six-component force balance and the Particle Imaging Velocimetry(PIV),respectively.The ratio of the spanwise length of a single ice shape piece to chord length and the spanwise length of the non-icing area between the two adjacent single ice shape pieces are defined as dimensionless ice shape length(w/c)and dimensionless modulation ratio(w/λ),respectively.The results indicate that for a fixed w/λ,the wing lift coefficient first increases and then drops with increasing w/c,and a peak value exists when w/c is between 0.1 and 0.2.The lower the w/λis,the higher the wing lift coefficient will be.The periodical variation of the flow separation area along the spanwise direction is attributed on the one hand to the acceleration effect of the flow field in the non-icing area which reduces the separation area,and on the other hand to the cross-flow caused by the streamwise vortices from the non-icing area to the icing area which promotes the mixing of the flow field(similar to vortex generators).The obtained modulation law is verified through flight tests and provides guidance for the use of ice shape modulation scheme for UAVs that cannot be completely anti-/deicing under severe weather conditions.

关键词： Dimensionless ice shape length Dimensionless modulation ratio Ice shape modulation NACA0012 finite wing Particle imaging velocimetry(PIV) Unmanned aerial vehicles(UAVs)

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探明未开发储量可动潜力评价新方法及应用——以Y油藏为例

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石油实验地质 2022年第2期44卷 331-336页

作者：苏映宏中国石化石油勘探开发研究院北京102206

目前探明未开发储量大多是多年筛选剩下的低品位储量,在现有的经济和技术条件下整体有效动用难度大,已有的方法多为评价整体的动用潜力,其已不再适宜于目前探明未开发储量的动用潜力评价。以Y油藏为例,根据油藏参数空间分布的非均质性... 详细信息

目前探明未开发储量大多是多年筛选剩下的低品位储量,在现有的经济和技术条件下整体有效动用难度大,已有的方法多为评价整体的动用潜力,其已不再适宜于目前探明未开发储量的动用潜力评价。以Y油藏为例,根据油藏参数空间分布的非均质性、开发技术的可选择性及经济参数的不确定性特点,应用数值模拟手段建立不同开发技术下单井控制可采储量预测模型,结合单井控制可采储量主控因素的概率分布特征,计算不同开发技术下单井控制可采储量概率分布,同时结合不同技术经济条件下单井控制可采储量经济界限,得到不同技术经济条件下可动概率,进一步计算得到地质储量可动潜力。实例应用表明,本方法计算的可动潜力储量与实际动用储量符合率达97.2%,准确性高,可以满足矿场需求,研究成果为探明未开发储量的可动潜力评价提供了有效方法。

关键词：探明未开发储量可动用储量评价方法单井控制可采储量概率分布

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牡荆素对脊髓损伤大鼠运动功能和炎症反应的影响

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广西医科大学学报 2024年第2期41卷 218-224页

作者：谢佩雅粟叶萍韦入菲曾颖虹陈欣颖宗少晖曾高峰广西医科大学药学院南宁530021 广西医科大学公共卫生学院南宁530021 广西医科大学第一附属医院脊柱骨病外科南宁530021

目的:探究牡荆素(VT)对脊髓损伤(SCI)大鼠和脂多糖(LPS)诱导的BV2小胶质细胞的影响。方法:体内实验:将SD大鼠分为假手术组(sham组)、模型SCI组(SCI组)和VT低剂量组、VT中剂量组和VT高剂量组。采用Basso-Beattie-Bresnahan(BBB)评分评估... 详细信息

目的:探究牡荆素(VT)对脊髓损伤(SCI)大鼠和脂多糖(LPS)诱导的BV2小胶质细胞的影响。方法:体内实验:将SD大鼠分为假手术组(sham组)、模型SCI组(SCI组)和VT低剂量组、VT中剂量组和VT高剂量组。采用Basso-Beattie-Bresnahan(BBB)评分评估大鼠的运动功能;实时荧光定量PCR(RT-qPCR)和酶联免疫吸附实验(ELISA)检测大鼠炎症因子基因和蛋白表达;苏木精—伊红(HE)染色观察脊髓组织结构。体外实验:将BV2小胶质细胞分为正常对照组(control组)、LPS组、VT低、中、高、剂量组和VT高剂量单独给药组,LPS诱导BV2小胶质细胞活化构建体外神经炎症模型;细胞计数试剂盒(CCK-8)法筛选VT安全浓度范围;RT-qPCR和蛋白质免疫印迹法(western blotting)检测细胞炎症基因和蛋白表达水平。结果:体内实验:与SCI组比较,VT中、高剂量组的BBB评分明显升高,损伤第7天,VT中剂量组评分显著高于VT高剂量组(均P<0.05);VT中剂量组TNF-αmRNA表达较SCI组降低,VT中、高剂量组IL-10 mRNA表达较SCI组显著升高(均P<0.05);VT低剂量组、VT中剂量组和VT高剂量组的TNF-α蛋白水平显著降低(均P<0.05),VT各剂量组的IL-10蛋白水平显著升高(均P<0.05);HE结果显示,sham组脊髓组织结构完整,神经元数量较多、排列较为规则整齐;SCI组脊髓组织炎症细胞浸润,出现较多空洞,神经元减少萎缩且排列不整齐;与SCI组比较,VT治疗组损伤更小,炎症浸润减轻较为明显。体外实验:与LPS组相比,VT各剂量组的TNF-αm RNA表达显著降低(均P<0.05),且成剂量依赖性降低;VT各剂量组TNF-α蛋白表达量降低(均P<0.001)。结论:VT通过抑制大鼠炎症反应,减轻脊髓组织病理学损伤,改善损伤后脊髓局部微环境,从而保护受损脊髓神经元,达到促进运动功能恢复的作用。

关键词：牡荆素脊髓损伤炎症反应神经保护

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Experimental Investigation into Characteristics of Plasma Aerodynamic Actuation Generated by Dielectric Barrier Discharge

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Chinese Journal of Aeronautics 2010年第1期23卷 39-45页

作者： Wu Yun Li yinghong Jia Min Song Huimin su Changbing Pu Yikang Department of Engineering Physics Tsinghua UniversityBeijing 100084 China Engineering College Air Force Engineering University Xi' an 710038 China

This article carries out synthetic measurements and analysis of the characteristics of the asymmetric surface dielectric barrier discharge plasma aerodynamic actuation. The rotational and vibrational temperatures of an N2 （ C3 Ⅱu ） molecule are measured in terms of the optical emission spectra from the N2 second positive system. A simplified collision-radiation model for N2 （C）and N2 ＋（B）is established on the basis of the ratio of emission intensity at 391.4 nm to that at 380.5 nm and the ratio of emission intensity at 371. 1 nm to that at 380.5 nm for calculating temporal and spatial averaged electron temperatures and densities. Under one atmosphere pressure, the electron temperature and density are on the order of 1.6 eV and 10H cm-3 respectively. The body force induced by the plasma aerodynamic actuation is on the order of tens of mN while the induced flow velocity is around 1.3 m/s. Starting vortex is firstly induced by the actuation ; then it develops into a near-wall jet, about 70 mm downstream of the actuator. Unsteady plasma aerodynamic actuation might stimulate more vortexes in the flow field. The induced flow direction by nanosecond discharge plasma aerodynamic actuation is not parallel, but vertical to the dielectric layer surface.

关键词： plasma aerodynamic actuation dielectric barrier discharge optical emission spectroscopy particle image velocimetry

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~1H nuclear magnetic resonance-based metabolomic study on efficacy of Qingrehuatan decoction against abundant phlegm-heat syndrome in young adults with essential hypertension

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Journal of Traditional Chinese Medicine 2015年第1期35卷 28-35页

作者： Feng Xuanchao Yang Zheng Chu Yuguang Du Bai su Mei Li Yi Wang yinghong Jiang Chunying Hu Yuanhui Department of Cardiology Guang'anmen Hospital China Academy of Chinese Medical Sciences Department of Cardiology Dongzhimen Hospital Beijing University of Chinese Medicine School of Basic Medical Sciences Beijing University of Chinese Medicine Editorial department Wangjing Hospital China Academy of Chinese Medical Sciences State Key Laboratory of Bioactive substance and Function of Natural Medicines Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College

OBJECTIVE: To observe the influence of Qingrehuatan decoction(QRHT) on serum metabolic profile in young essential hypertension(YEH) patients with abundant phlegm-heat syndrome and provide a basis for treatment with the decoction.METHODS: Twelve male YEH patients were randomly selected and serum samples were collected for examination before and after 4 weeks of thetreatment with QRHT. Twelve healthy males were randomly selected and their serum samples were collected as a control. All serum samples were detected using metabolomic technology with1 H nuclear magnetic resonance. Differences in metabolites were studied by principal component analysis and partial least squares-discriminate analysis,which produced scores and loadings plots.REsuLTS: After 4 weeks of treatment, serum substances could be distinguished between the YEH patients with abundant phlegm-heat syndrome and the control patients. The specific serum endogenous metabolites tended to improve after the treatment. QRHT can appropriately increase the levels of glucose, lactic acid, citric acid, high-density lipoprotein, phosphatidylcholine, glycerophosphate choline, hydroxybutyrate, alanine, and glutamate.QRHT could also decrease the levels of low-density lipoprotein/very low-density lipoprotein, lipids,N-acetyl glycoprotein, and O-acetyl glycoprotein.CONCLUSION: QRHT can effectively ameliorate metabolic disorders in YEH Patients with abundant phlegm- heat syndrome.1H NMR-based metabolomic technology can provide an objective basis for the treatment of YEH patients with abundant phlegm-heat syndrome using QRHT.

关键词：原发性高血压核磁共振法代谢组学热证基础极低密度脂蛋白血清样品磷脂酰胆碱

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数字经济对旅游业碳排放效率的影响及门槛效应

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中国人口·资源与环境 2023年第8期33卷 69-79页

作者：苏振郑应宏郭峦广西大学工商管理学院广西南宁530004 广西高校统计与管理交叉科学重点实验室广西南宁530004 广西发展战略研究院广西南宁530004

旅游业是信息密集型行业,与数字经济具有天然适配性。在碳达峰、碳中和目标要求下,提升旅游业碳排放效率问题日益紧迫,而数字经济的发展为旅游业碳排放效率提升提供了新契机。科学评价数字经济对区域旅游业碳排放效率的影响效应,有助于... 详细信息

旅游业是信息密集型行业,与数字经济具有天然适配性。在碳达峰、碳中和目标要求下,提升旅游业碳排放效率问题日益紧迫,而数字经济的发展为旅游业碳排放效率提升提供了新契机。科学评价数字经济对区域旅游业碳排放效率的影响效应,有助于依托数字经济赋能旅游业节能减排,为旅游业绿色发展和生态文明建设提供有力支撑。该研究基于2011—2019年中国30个省份数据,利用地理加权回归和双重门槛模型分析数字经济对旅游业碳排放效率的影响。结果显示:①全国旅游业碳排放效率整体呈现“东南高,西北低”的空间分布格局。数字经济发展指数在研究期内呈现出显著上升趋势,且在空间上呈现出“东南高,西北低,中部均衡”的格局。②数字经济发展对旅游业碳排放效率的提升具有显著的正向促进作用。GWR模型结论表明,数字经济发展有利于旅游业实现低碳绿色转型。③数字经济对旅游业碳排放效率的提升存在双重门槛,且表现出倒“U”型非线性关系。当数字经济发展水平小于第一门槛值时,旅游发展显著正向促进旅游业碳排放效率;当该值处于第一和第二门槛值之间时,这种正向促进影响变小;当该值大于第二门槛值时,则为负向影响。因此,该研究建议:应加大数字经济与旅游业合理融合发展力度,培育与数字技术高度融合的旅游产品;鼓励数字经济强省对口帮扶弱省,缩小省际间旅游产业“数字鸿沟”;明确因地制宜差异化的发展战略,发挥数字经济在节能减排的最优效应;建设数字化旅游专业人才队伍,助力旅游业节能低碳高质量发展。

关键词：数字经济旅游碳排放效率空间分异门槛效应

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MHD Flow Control of Oblique Shock Waves Around Ramps in Low-temperature supersonic Flows

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Chinese Journal of Aeronautics 2010年第1期23卷 22-32页

作者： su Changbing,Li yinghong,Cheng Bangqin,Wang Jian,Cao Jun,Li Yiwen Engineering College,Air Force Engineering University,Xi’an 710038,China Engineering College Air Force Engineering University Xi'an 710038 China

This article is devoted to experimental study on the control of the oblique shock wave around the ramp in a low-temperature supersonic flow by means of the magnetohydrodynamic （MHD） flow control technique. The purpose of the experiments is to take advantage of MHD interaction to weaken the oblique shock wave strength by changing the boundary flow characteristics around the ramp. Plasma columns are generated by pulsed direct current （ DC ） discharge, the magnetic fields are generated by Nd-Fe-B rare-earth permanent magnets and the oblique shock waves in supersonic flow are generated by the ramp. The Lorentz body force effect of MHD interaction on the plasma-induced airflow velocity is verified through particle image velocimetry（PIV）measurements. The experimental results from the supersonic wind tunnel indicate that the MHD flow control can drastically change the flow characteristics of the airflow around the ramp and decrease the ratio of the Pitot pressure after shock wave to that before it by up to 19.66% ,which leads to the decline in oblique shock wave strength. The oblique shock waves in front of the ramp move upstream by the action of the Lorentz body force. The discharge characteristics are analyzed and the MHD interaction time and consumed energy are determined with the help of the pulsed DC discharge images. The interaction parameter corresponding to the boundary layer velocity can reach 1.3 from the momentum conservation equation. The velocity of the plasma column in the magnetic field is much faster than that in the absence of magnetic field force. The plasma can strike the neutral gas molecules to transfer momentum and accelerate the flow around the ramp.

关键词： aerospace propulsion system magnetohydrodynamic flow control plasma shock wave

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滩坝砂油藏不同压裂方式下单井控制可采储量预测方法

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石油实验地质 2021年第4期43卷 697-703页

作者：苏映宏中国石化石油勘探开发研究院北京102206

单井控制可采储量是评价滩坝砂油藏开发是否经济可行的重要指标。由于未动用特低渗透滩坝砂油藏存在压敏效应、启动压力梯度、不同压裂方式等特征,难以应用常规的单井控制可采储量预测方法进行预测。基于典型区块静、动态数据,建立直井... 详细信息

单井控制可采储量是评价滩坝砂油藏开发是否经济可行的重要指标。由于未动用特低渗透滩坝砂油藏存在压敏效应、启动压力梯度、不同压裂方式等特征,难以应用常规的单井控制可采储量预测方法进行预测。基于典型区块静、动态数据,建立直井分层压裂油藏数值模拟模型,通过历史拟合确定启动压力梯度及压敏效应表征公式中的系数,并分析压敏效应和启动压力梯度对生产动态的影响。在此基础上,分析不同油藏参数和开发参数对直井分层压裂弹性开发单井控制可采储量的影响,确定单井控制可采储量的主控因素依次为:压力系数、渗透率、含油饱和度、有效厚度、孔隙度、压裂缝长、集中度和黏度;通过多元回归方式建立直井分层压裂弹性开发下单井控制可采储量与主控因素之间的计算公式,经与实际生产井数据对比,相对误差为4.58%,说明公式具有较高的精度,能够满足矿场要求。进一步建立直井体积压裂、水平井多段压裂和水平井体积压裂弹性开发单井控制可采储量与油藏参数之间的预测公式,研究结果为评价滩坝砂油藏动用潜力提供基础。

关键词：滩坝砂油藏单井控制可采储量主控因素压裂方式储量预测

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